cosec(70+a)-sec(55+a)+cot(35+a)
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➡HOPE THIS HELPS YOU⬇
Trigonometry is the study of angles with ratios sine, cosine, cot, tangent, cosec, sectant etc.
The main fundamental of this study is to go through the values of angles.
♧♧♧RULES♧♧♧
cosec (90 - x) = sec x
tan (90-A) = cot A
♧♧♧SOLUTION♧♧♧
Now,
L.H.S.
= cosec (65+A) - sec (25-A) - tan (55-A) + cot (35+A)
= cosec {90 - (25-A)} - sec (25-A) - tan {90 - (35+A)} + cot (35+A)
= sec (25-A) - sec (25-A) - cot (35+A) + cot (35+A)
= 0
= R.H.S. (Proved)
⬆HOPE THIS HELPS YOU⬅
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